U.S. patent application number 17/004315 was filed with the patent office on 2021-03-18 for shot blasting machine and impeller assembly thereof.
The applicant listed for this patent is KUNSHAN AIRBAG PACKING CORP.. Invention is credited to TSAI-MING KUO, KAO-HSIUNG LIAO, PING-YUAN LIAO, TAI-AN LIAO.
Application Number | 20210078137 17/004315 |
Document ID | / |
Family ID | 1000005061551 |
Filed Date | 2021-03-18 |
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United States Patent
Application |
20210078137 |
Kind Code |
A1 |
LIAO; TAI-AN ; et
al. |
March 18, 2021 |
SHOT BLASTING MACHINE AND IMPELLER ASSEMBLY THEREOF
Abstract
A shot blasting machine includes a shot processing assembly, at
least one impeller assembly, a collecting assembly, and a lifting
assembly. The at least one impeller assembly includes a pair of
rotary plates, a plurality of impeller blades, a plurality of
connecting rods, and a protective case body. Each of the rotary
plates has a central hole, a plurality of impeller blade grooves,
and a plurality of limiting recesses. Each of the plurality of
impeller blade grooves has a groove bottom part that is adjacent to
the central hole and a groove top part that is adjacent to a
circumference of each of the pair of rotary plates. Each of the
plurality of impeller blades including a vane part and a pair of
blade side parts that are connected to two sides of the vane part,
and each of the blade side part has a limiting protrusion.
Inventors: |
LIAO; TAI-AN; (New Taipei
City, TW) ; LIAO; KAO-HSIUNG; (New Taipei City,
TW) ; LIAO; PING-YUAN; (New Taipei City, TW) ;
KUO; TSAI-MING; (New Taipei City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
KUNSHAN AIRBAG PACKING CORP. |
KUNSHAN CITY |
|
CN |
|
|
Family ID: |
1000005061551 |
Appl. No.: |
17/004315 |
Filed: |
August 27, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B24C 5/062 20130101;
B24C 5/066 20130101; B24C 5/068 20130101 |
International
Class: |
B24C 5/06 20060101
B24C005/06 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 12, 2019 |
TW |
108132992 |
Claims
1. An impeller assembly of a shot blasting machine, comprising: a
pair of rotary plates, each of the pair of rotary plates including
a central hole, a plurality of impeller blade grooves, and a
plurality of limiting recesses, wherein the plurality of impeller
blade grooves extend from the central hole toward a circumference
of each of the pair of rotary plates, each of the plurality of
impeller blade grooves has a groove bottom part that is adjacent to
the central hole and a groove top part that is adjacent to the
circumference of each of the pair of rotary plates, an inner groove
width of the groove bottom part is greater than an inner groove
width of the groove top part, and the plurality of limiting
recesses are further recessed in the plurality of impeller blade
grooves; a plurality of impeller blades, each of the plurality of
impeller blades including a vane part and a pair of blade side
parts, the pair of blade side parts being connected to two sides of
the vane part, and each of the blade side parts having a limiting
protrusion, wherein one of the blade side parts of each of the
plurality of impeller blades is accommodated in one of the
plurality of impeller blade grooves, the limiting protrusion is
accommodated in the limiting recess, a shape of the pair of blade
side parts corresponds to a shape of the plurality of impeller
blade grooves, each of the pair of blade side parts has a root
thickness corresponding to the groove bottom part and a top
thickness corresponding to the groove top part, and the root
thickness is greater than the top thickness; a plurality of
connecting rods, the plurality of connecting rods being connected
to the pair of rotary plates; and a protective case body, the
protective case body covering the pair of rotary plates and the
plurality of impeller blades, and defining a blast-exiting plane,
wherein the protective case body includes a front inclined baffle
and a back baffle, the back baffle is substantially orthogonal to
the blast-exiting plane, and the front inclined baffle is inclined
toward the blast-exiting plane.
2. The impeller assembly according to claim 1, wherein each of the
plurality of limiting recesses is adjacent to the groove bottom
part, and tops of the plurality of impeller blades exceed the
circumferences of the pair of rotary plates.
3. The impeller assembly according to claim 1, further comprising
an impeller head and a distributor, wherein an inner side of the
impeller head is connected to one of the pair of rotary plates, an
outer side of the impeller head is connected to a motor and the
impeller head is driven by the motor, the distributor is connected
to the inner side of the impeller head and movably positioned in
the central holes of the pair of rotary plates, and the distributor
has a plurality of penetrating slots formed therein.
4. The impeller assembly according to claim 3, further comprising
an input tube that receives shots, an exit end of the input tube
being fixedly connected to a control cage, the control cage being
fixedly positioned in the central holes of the pair of the rotary
plates, and the distributor being rotatably positioned in the
control cage, wherein the control cage has an exit.
5. The impeller assembly according to claim 1, wherein the
protective case body further includes an upper curved board and a
pair of side protective boards, two ends of the upper curved board
are connected to the front inclined baffle and an upper edge of the
back baffle, respectively, and the pair of side protective boards
are correspondingly positioned at two sides of the upper curved
board, the front inclined baffle and the back baffle, and are
connected to side edges of the upper curved board, the front
inclined baffle, and the back baffle.
6. The impeller assembly according to claim 1, further comprising
an outer cover shell covering over the protective case body.
7. A shot blasting machine, comprising: a shot processing assembly
used for processing the shots, the shot processing assembly
including an output part; at least one impeller assembly positioned
under the output part, and receiving the shots, each of the at
least one impeller assembly including: a pair of rotary plates,
each of the pair of rotary plates including a central hole, a
plurality of impeller blade grooves, and a plurality of limiting
recesses, wherein the plurality of impeller blade grooves extend
from the central hole toward a circumference of each of the pair of
rotary plates, each of the plurality of impeller blade grooves has
a groove bottom part that is adjacent to the central hole and a
groove top part that is adjacent to the circumference of each of
the pair of rotary plates, an inner groove width of the groove
bottom part is greater than an inner groove width of the groove top
part, and the plurality of limiting recesses are further recessed
in the plurality of impeller blade grooves; a plurality of impeller
blades, each of the plurality of impeller blades including a vane
part and a pair of blade side parts, the pair of blade side parts
being connected to two sides of the vane part, and each of the
blade side part has a limiting protrusion, wherein one of the blade
side parts of each of the plurality of impeller blades is
accommodated in one of the plurality of impeller blade grooves, the
limiting protrusion is accommodated in the limiting recess, a shape
of the pair of blade side parts corresponds to a shape of the
plurality of impeller blade grooves, each of the pair of blade side
parts has a root thickness corresponding to the groove bottom part
and a top thickness corresponding to the groove top part, and the
root thickness is greater than the top thickness; a plurality of
connecting rods, the plurality of connecting rods being connected
to the pair of rotary plates; and a protective case body, the
protective case body covering the pair of rotary plates and the
plurality of impeller blades, and defining a blast-exiting plane,
wherein the protective case body includes a front inclined baffle
and a back baffle, the back baffle is substantially orthogonal to
the blast-exiting plane, and the front inclined baffle is inclined
toward the blast-exiting plane; a collecting assembly, the
collecting assembly being positioned under the at least one
impeller assembly, so as to collect the shots; and a lifting
assembly, the lifting assembly transporting the shots that are
collected back to the shot processing assembly.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATION
[0001] This application claims the benefit of priority to Taiwan
Patent Application No. 108132992, filed on Sep. 12, 2019. The
entire content of the above identified application is incorporated
herein by reference.
[0002] Some references, which may include patents, patent
applications and various publications, may be cited and discussed
in the description of this disclosure. The citation and/or
discussion of such references is provided merely to clarify the
description of the present disclosure and is not an admission that
any such reference is "prior art" to the disclosure described
herein. All references cited and discussed in this specification
are incorporated herein by reference in their entireties and to the
same extent as if each reference was individually incorporated by
reference.
FIELD OF THE DISCLOSURE
[0003] The present disclosure relates to a shot blasting machine
and an impeller assembly thereof, and more particularly to a shot
blasting machine that is capable of combining advantages of sand
blasting and shot peening, with the impeller assembly being able to
shoot shots at a high speed, so as to form a matte surface or an
eroded surface on a surface of a workpiece to be processed.
BACKGROUND OF THE DISCLOSURE
[0004] Sand blasting is one of the conventional methods for surface
finishing of a workpiece. It is commonly seen in sand blasting to
shoot a blasting material onto a surface of a workpiece at a high
speed by using compressed air as power, so that an exterior or a
shape of the workpiece is changed. Due to impact and cutting done
by the blasting material on the surface of the workpiece, the
surface of the workpiece is cleaned to a certain extent and can
have different degrees of roughness. However, when the compressed
air is used as the power to accelerate sand blasting, the shooting
speed of the blasting material is subjected to a certain
limitation.
[0005] Another similar method for surface finishing is shot
peening, which is to have the surface of the workpiece be
continuously struck with a plurality of round and small steel
beads. Each of the plurality of steel beads strikes the surface of
the workpiece (e.g., a metal component) makes a small indentation
or a recess, so that the surface can be hardened to thereby achieve
the effect of increased hardness. During the process of shot
peening, a plurality of recesses are formed on the surface of the
workpiece, and a surface layer of the metal component is extended,
so as to further increase the hardness of the surface of the
workpiece.
[0006] The main function of sand blasting is to clean and to
enhance the roughness of a surface, so as to facilitate the
following processes. On the other hand, shot peening focuses on
increasing fatigue resistance, stress corrosion resistance, and the
surface hardness of the workpiece, so as to achieve the effect of
extending the service life of the workpiece.
[0007] Compared to sand blasting, shot peening machines, including
equipment for increasing the speed of shot peening beads and
surrounding walls of an area for processing the workpiece, are
easily damaged, given that shot peening materials used by the shot
peening machines are relatively larger in particle diameter.
[0008] The present disclosure provides a shot blasting machine that
combines the advantages of both sand blasting and shot peening. The
impeller assembly of the shot blasting machine is able to shoot
shots at a high speed, and particle diameters of the shots are
between that of the blasting material for sand blasting and that of
the steel beads for shot peening. Therefore, the shot blasting
machine can not only provide a cleaning effect and enhance the
surface roughness, but also increase the fatigue resistance and the
surface hardness of the workpiece, thereby extending the service
life of the workpiece.
SUMMARY OF THE DISCLOSURE
[0009] In response to the above-referenced technical inadequacies,
the present disclosure provides a shot blasting machine and an
impeller assembly thereof.
[0010] In one aspect, the present disclosure provides an impeller
assembly of a shot blasting machine, including a pair of rotary
plates, a plurality of impeller blades, a plurality of connecting
rods, and a protective case body. Each of the pair of rotary plates
includes a central hole, a plurality of impeller blade grooves, and
a plurality of limiting recesses. The plurality of impeller blade
grooves extend from the central hole toward a circumference of each
of the pair of rotary plates. Each of the plurality of impeller
blade grooves has a groove bottom part that is adjacent to the
central hole and a groove top part that is adjacent to the
circumference of each of the pair of rotary plates, and an inner
groove width of the groove bottom part is greater than an inner
groove width of the groove top part. The plurality of limiting
recesses are further recessed in the plurality of impeller blade
grooves. Each of the plurality of impeller blades includes a vane
part and a pair of blade side parts, the pair of blade side parts
are connected to two sides of the vane part, and each of the blade
side part has a limiting protrusion. One of the blade side parts of
each of the plurality of impeller blades is accommodated in one of
the plurality of impeller blade grooves, and the limiting
protrusion is accommodated in the limiting recess. A shape of the
pair of blade side parts corresponds to a shape of the plurality of
impeller blade grooves. Each of the pair of blade side parts has a
root thickness corresponding to the groove bottom part and a top
thickness corresponding to the groove top part, and the root
thickness is greater than the top thickness. The plurality of
connecting rods are connected to the pair of rotary plates. The
protective case body covers the pair of rotary plates and the
plurality of impeller blades, and defines a blast-exiting plane.
The protective case body includes a front inclined baffle and a
back baffle, the back baffle is substantially orthogonal to the
blast-exiting plane, and the front inclined baffle is inclined
toward the blast-exiting plane.
[0011] In another aspect, the present disclosure provides a shot
blasting machine including a shot processing assembly, at least one
impeller assembly, a collecting assembly, and a lifting assembly.
The shot processing assembly, which is used to process the shots,
includes an output part. The at least one impeller assembly is
positioned under the output part, and receives the shots.
[0012] Each of the at least one impeller assembly includes a pair
of rotary plates, a plurality of impeller blades, a plurality of
connecting rods, and a protective case body. Each of the pair of
rotary plates includes a central hole, a plurality of impeller
blade grooves, and a plurality of limiting recesses. The plurality
of impeller blade grooves extend from the central hole toward a
circumference of each of the pair of rotary plates. Each of the
plurality of impeller blade grooves has a groove bottom part that
is adjacent to the central hole and a groove top part that is
adjacent to the circumferences of each of the pair of rotary
plates. An inner groove width of the groove bottom part is greater
than an inner groove width of the groove top part. The plurality of
limiting recesses are further recessed in the plurality of impeller
blade grooves. Each of the plurality of impeller blades includes a
vane part and a pair of blade side parts, the pair of blade side
parts are connected to two sides of the vane part, and each of the
blade side part has a limiting protrusion. One of the blade side
parts of each of the plurality of impeller blades is accommodated
in one of the plurality of impeller blade grooves, and the limiting
protrusion is accommodated in the limiting recess. A shape of the
pair of blade side parts corresponds to a shape of the plurality of
impeller blade grooves. Each of the pair of blade side parts has a
root thickness corresponding to the groove bottom part and a top
thickness corresponding to the groove top part, and the root
thickness is greater than the top thickness. The plurality of
connecting rods are connected to the pair of rotary plates. The
protective case body covers the pair of rotary plates and the
plurality of impeller blades, and defines a blast-exiting plane.
The protective case body includes a front inclined baffle and a
back baffle, the back baffle is substantially orthogonal to the
blast-exiting plane, and the front inclined baffle is inclined
toward the blast-exiting plane. The collecting assembly is
positioned under the at least one impeller assembly, so as to
collect the shots. The lifting assembly transports the shots that
are collected back to the shot processing assembly.
[0013] One of the advantages of the present disclosure is that,
through utilizing the centrifugal force generated when the
plurality of impeller blades are rotating at a high speed, the
plurality of impeller blades are more tightly engaged with the
plurality of impeller blade grooves of each of the pair of rotary
plates. This configuration can be easily manufactured and
assembled, which is beneficial in increasing the speed of the shots
for surface finishing, and enhancing the effect of surface
finishing.
[0014] These and other aspects of the present disclosure will
become apparent from the following description of the embodiment
taken in conjunction with the following drawings and their
captions, although variations and modifications therein may be
affected without departing from the spirit and scope of the novel
concepts of the disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present disclosure will become more fully understood
from the following detailed description and accompanying
drawings.
[0016] FIG. 1 is an exploded perspective view of an impeller
assembly of a shot blasting machine of the present disclosure.
[0017] FIG. 2 is another exploded perspective view of the impeller
assembly of the shot blasting machine of the present
disclosure.
[0018] FIG. 3 is a front view of a rotary plate and a plurality of
impeller blades of the present disclosure.
[0019] FIG. 4 is an assembled perspective view of the impeller
assembly of the shot blasting machine of the present
disclosure.
[0020] FIG. 5 is an inner side view of the impeller assembly of the
shot blasting machine of the present disclosure.
[0021] FIG. 6 is a partial sectional view of the impeller assembly
of the shot blasting machine of the present disclosure.
[0022] FIG. 7 is a front view of a strip processing shot blasting
machine of the present disclosure.
[0023] FIG. 8 is a side view of the strip processing shot blasting
machine of the present disclosure.
[0024] FIG. 9 is a front view of a hanger type shot blasting
machine of the present disclosure.
[0025] FIG. 10 is a front view of a tumble and drum shot blasting
machine of the present disclosure.
[0026] FIG. 11 is a front view of a horizontal load conveyor shot
blasting machine of the present disclosure.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0027] The present disclosure is more particularly described in the
following examples that are intended as illustrative only since
numerous modifications and variations therein will be apparent to
those skilled in the art. Like numbers in the drawings indicate
like components throughout the views. As used in the description
herein and throughout the claims that follow, unless the context
clearly dictates otherwise, the meaning of "a", "an", and "the"
includes plural reference, and the meaning of "in" includes "in"
and "on". Titles or subtitles can be used herein for the
convenience of a reader, which shall have no influence on the scope
of the present disclosure.
[0028] The terms used herein generally have their ordinary meanings
in the art. In the case of conflict, the present document,
including any definitions given herein, will prevail. The same
thing can be expressed in more than one way. Alternative language
and synonyms can be used for any term(s) discussed herein, and no
special significance is to be placed upon whether a term is
elaborated or discussed herein. A recital of one or more synonyms
does not exclude the use of other synonyms. The use of examples
anywhere in this specification including examples of any terms is
illustrative only, and in no way limits the scope and meaning of
the present disclosure or of any exemplified term. Likewise, the
present disclosure is not limited to various embodiments given
herein. Numbering terms such as "first", "second" or "third" can be
used to describe various components, signals or the like, which are
for distinguishing one component/signal from another one only, and
are not intended to, nor should be construed to impose any
substantive limitations on the components, signals or the like.
First Embodiment
[0029] Referring to FIG. 1 to FIG. 3, the present disclosure
provides an impeller assembly 100 of a shot blasting machine. The
impeller assembly includes a pair of rotary plates 11, a plurality
of impeller blades 12, a plurality of connecting rods 13, and a
protective case body 14. In this embodiment, the pair of rotary
plates 11 are in a shape of a round disk, and the pair of rotary
plates 11 are disposed relative to each other. Each of the pair of
rotary plates 11 includes a central hole 110, a plurality of
impeller blade grooves 111, and a plurality of limiting recesses
112. The central hole 110 penetrates through each of the pair of
rotary plates 11. The plurality of impeller blade grooves 111 are
arranged at equiangular intervals and extend radially from the
central hole 110 toward a circumference of each of the pair of
rotary plates 11. Each of the plurality of impeller blade grooves
111 has a groove bottom part 111b that is adjacent to the central
hole 110 and a groove top part 111a that is adjacent to the
circumference of each of the pair of rotary plates 11, and an inner
groove width W12 of the groove bottom part 111b is greater than an
inner groove width W11 of the groove top part 111a. The plurality
of limiting recesses 112 are further recessed in the plurality of
impeller blade grooves 111.
[0030] In this embodiment, each of the plurality of impeller blades
12 has a shape of the alphabet "I" from both a top view and a
bottom view. The plurality of impeller blades 12 are arranged
radially and at equiangular intervals from a center of one of the
pair of rotary plates 11. Preferably, a quantity of the plurality
of impeller blades 12 is an even number, and each of the plurality
of impeller blades 12 is arranged along a diameter direction (as
shown in FIG. 5). Each of the plurality of impeller blades 12
includes a vane part 121 and a pair of blade side parts 122, and
the vane part 121 has a thickness that is substantially consistent.
The pair of blade side parts 122 are connected to two sides of the
vane part 121, and each of the blade side part 122 has a limiting
protrusion 124. One of the blade side parts 122 is accommodated in
one of the plurality of impeller blade grooves 111, and the
limiting protrusion 124 is accommodated in the limiting recess 112.
A shape of the pair of blade side parts 122 corresponds to a shape
of the plurality of impeller blade grooves 111. Each of the pair of
blade side parts 122 has a root thickness W22 corresponding to the
groove bottom part 111b and a top thickness W21 corresponding to
the groove top part 111a, and the root thickness W22 is greater
than the top thickness W21. In this embodiment, each of the
plurality of limiting recesses 112 is adjacent to the groove bottom
part 111b.
[0031] The present disclosure is able to restrict displacement of
the plurality of impeller blades 12 under a high speed rotation,
through the uniquely designed shape of the plurality of impeller
blade grooves 111 of each of the pair of rotary plates 11. In the
present disclosure, the centrifugal force generated when the
plurality of impeller blades 12 are rotating at a high speed is
utilized so that the plurality of impeller blades 12 are more
outwardly and tightly engaged with the plurality of impeller blade
grooves 111 of each of the pair of rotary plates 11. This
configuration does not require assembling methods such as nuts and
bolts or welding. In addition, due to a root width D2 being greater
than a top width D1 of each of the plurality of impeller blades 12
along a direction that is parallel to an axis X, the plurality of
impeller blades 12 are more tightly engaged with each of the pair
of rotary plates 11.
[0032] In this embodiment, the plurality of connecting rods 13 are
in a shape of a cylindrical rod. The plurality of connecting rods
13 are connected to the pair of rotary plates 11, such that the
pair of rotary plates 11 can be evenly and stably connected to each
other. Each of the plurality of connecting rods 13 is disposed
between two of the plurality of impeller blades 12, and two sides
of each of the plurality of connecting rods 13 are respectively
fixed to, e.g., bolted on, one of a plurality of affixing recesses
113 of each of the pair of rotary plates 11.
[0033] The protective case body 14 covers the pair of rotary plates
11 and the plurality of impeller blades 12, and defines a
blast-exiting plane 140. In this embodiment, the protective case
body 14 is used for restricting the shots to be inside the
protective case body 14. As such, the protective case body 14 has a
sufficient wall thickness to prevent from being shot through. The
protective case body 14 includes a front inclined baffle 141 and a
back baffle 142, the back baffle 142 is substantially orthogonal to
the blast-exiting plane 140, and the front inclined baffle 141 is
inclined to the blast-exiting plane 140. As shown in FIG. 6, a top
part of each the plurality of impeller blades 12 protrudes out of
the circumference of the pair of rotary plates 11. In this
embodiment, the shots can be ceramic sand, glass beads, nylon sand,
quartz sand, emery, iron sand, metal pellets, etc.
[0034] The protective case body 14 further includes an upper curved
board 143 and a pair of side protective boards 144. Two ends of the
upper curved board 143 are connected to the front inclined baffle
141 and an upper edge of the back baffle 142, respectively. The
pair of side protective boards 144 are correspondingly positioned
at two sides of the upper curved board 143, the front inclined
baffle 141 and the back baffle 142, and are connected to side edges
of the upper curved board 143, the front inclined baffle 141 and
the back baffle 142. In this embodiment, except for the pair of
side protective boards 144, the protective case body 14 is divided
into three pieces (which are the front inclined baffle 141, the
upper curved board 143, and the back baffle 142) along and above
the blast-exiting plane 140, but the present disclosure is not
limited thereto. For example, the protective case body 14 can be
divided into two or four pieces. It is worth mentioning that, the
front inclined baffle 141, the upper curved board 143, and the back
baffle 142 can be fittingly engaged with one another, which makes
disassembling and replacement easier.
[0035] The impeller assembly 100 further includes an outer cover
shell 15, and the outer cover shell 15 covers the protective case
body 14. Referring to FIG. 6, a shape and a configuration of angles
of the outer cover shell 15 substantially correspond to those of
the protective case body 14, so that the outer cover shell 15
covers a top surface, two side surfaces, a front inclined surface,
and a back surface of the protective case body 14. An input tube 22
and a hopper 21 can be fixed on the outer cover shell 15. In other
words, a front inclined surface (corresponding to the blast-exiting
plane 140) of the outer cover shell 15 has an inclined angle that
is substantially equal to that of the front inclined baffle 141
(corresponding to the blast-exiting plane 140) of the protective
case body 14.
[0036] As shown in FIG. 5, in this embodiment, the impeller
assembly 100 further includes an impeller head 16 and a distributor
17. An inner side of the impeller head 16 is connected to one of
the pair of rotary plates 11, an outer side of the impeller head 16
is connected to a motor M and the impeller head 16 is driven by the
motor M. The distributor 17 is connected to the inner side of the
impeller head 16 and movably positioned in the central holes 110 of
the pair of rotary plates 11. The distributor 17 has a plurality of
penetrating slots 170 formed therein.
[0037] Referring to FIG. 5, in this embodiment, the impeller
assembly 100 further includes the input tube 22 that receives
shots, and the input tube 22 is connected below the hopper 21. An
exit end of the input tube 22 is fixedly connected to a control
cage 18, the control cage 18 is fixedly positioned in the central
holes 110 of the pair of the rotary plates 11, and the distributor
17 is rotatably positioned in the control cage 18. The control cage
18 has an exit 180, and is capable of controlling a position and a
quantity of the shots to be shot out. The exit 180 of the control
cage 18 in this embodiment faces upward. The exit end of the input
tube 22 faces toward the distributor 17, and the plurality of
penetrating slots 170 are aligned with the exit 180 of the control
cage 18 in turn during the rotation. A tubular periphery of the
control cage 18 is adjacent to, but not in contact with, the
plurality of impeller blades 12.
[0038] When the shots (not shown in the figures) enters the
impeller assembly 100 through the input tube 22, the distributor
17, being powered by the motor M, rotates the shots at a high
speed. The shots pass through the exit 180 of the control cage 18
from the penetrating slots 170 of the distributor 17 and move
in-between the plurality of impeller blades 12, and then are shot
outward by the plurality of impeller blades 12 at a high speed.
[0039] As shown in FIG. 7 and FIG. 8, the impeller assembly 100 of
the present disclosure can be configured for various types of shot
blasting machines. FIG. 7 and FIG. 8 illustrates the impeller
assembly 100 being disposed in a shot blasting machine 9a that
processes strips B. The shot blasting machine 9a includes a shot
processing assembly 93a, a plurality of impeller assemblies 100, a
collecting assembly 91a, and a lifting assembly 92a. The shot
processing assembly 93a can provide shots (also known as grit
abrasives, which are not shown in the figures), and the shot
processing assembly 93a can either receive new shots, or process
the collected shots to sort, filter out, and separate the shots
qualified for reuse from those which are not. The shot processing
assembly 93a has an output part 94a, and the plurality of impeller
assemblies 100 are positioned under the output part 94a. Upon
receiving the shots, the plurality of impeller assemblies 100 then
accelerate and shoot the shots out. The collecting assembly 91a is
positioned under the plurality of impeller assemblies 100, so as to
collect the shots. The lifting assembly 92a transports the shots
that are collected back to the shot processing assembly 93a. A
quantity of the plurality of impeller assemblies 100 can be at
least one, and the quantity can be determined according to
practical requirements, such as the extent of surface finishing
processed by the shot blasting machine or shot blasting angles that
are required for workpieces to be processed.
[0040] As shown in FIG. 8, the shot blasting machine 9a has two
pairs of the impeller assemblies 100 that are disposed apart from
each other, and two adjacent impeller assemblies 100 of each of the
two pairs of impeller assemblies 100 can be disposed on different
planes, or disposed on the same plane. As shown in FIG. 8, an
obtuse angle .alpha. is formed between the respective two of the
blast-exiting plane 140 of each pair of the two pairs of the
impeller assemblies 100, which is approximately 120 to 150 degrees.
The front inclined baffle 141 of the protective case body 14 of
each pair of the two pairs of the impeller assemblies 100 are
disposed opposite to each other. In this embodiment, each of the
front inclined baffles 141 is close to two side walls of a
processing area, and each of the front inclined baffles 141 is
inclined slightly inward with respect to one of the two side walls,
forming an acute angle .beta. of approximately 10 to 15 degrees, so
as to prevent the shots from blasting the two side walls of the
processing area.
[0041] For ease of illustration, for this embodiment along with
other types of shot blasting machines as described below,
components and assemblies in-between the output part 94a and the
plurality of impeller assemblies 100 are not shown in the following
figures. A person having ordinary skill in the art is able to
realize that the output part 94a and the plurality of impeller
assemblies 100 can be connected by funnels or tubes.
[0042] As shown in FIG. 9, at least one of the impeller assemblies
100 of the present disclosure can be disposed in a shot blasting
machine 9b that processes hanging workpieces S. The shot blasting
machine 9b has a plurality of workstations (not labeled in the
figure), each of the plurality of workstations (not labeled in the
figure) has four of the impeller assemblies 100, and each of the
plurality of workstations has two of the impeller assemblies 100
disposed on two sides thereof. The blast-exiting plane 140 of each
of the impeller assemblies 100 is disposed vertically, facing
toward the hanging workpieces S. In other words, the blast-exiting
planes 140 are parallel to the hanging workpieces S. The hanging
workpieces S are moved along a rail across the processing area.
Similar to the abovementioned machines, the shot blasting machine
9b has a shot processing assembly 93b, at least one of the impeller
assemblies 100, a collecting assembly 91b, and a lifting assembly
92b. The shot processing assembly 93b provides the shots to the
plurality of impeller assemblies 100 through an output part 94b.
The respective front inclined baffles 141 of each of the two of the
impeller assemblies 100 are disposed on the same side facing toward
each other, and each extends in a direction that crosses each
other, so as to sufficiently cover every part of the hanging
workpieces S. In addition, each of the back baffles 142 extends
toward a direction that is substantially perpendicular to the
hanging workpieces S.
[0043] As shown in FIG. 10, the impeller assembly 100 can be
disposed in a tumble and drum type shot blasting machine 9c, which
is suitable for small workpieces and utilizes a loop belt to rotate
a cylindrical processing area 90 that processes a batch of the
small workpieces. The impeller assembly 100 is disposed above the
cylindrical processing area 90, and after the small workpieces are
poured into the cylindrical processing area 90, a hatch door (not
labeled in the figure) is closed. Similar to the abovementioned
machines, the shot blasting machine 9c has a shot processing
assembly 93c, the impeller assembly 100, a collecting assembly 91c,
and a lifting assembly 92c. The shot processing assembly 93c
provides the shots to the impeller assemblies 100 through an output
part 94c. The collecting assembly 91c is positioned below the hatch
door (not labeled in the figure).
[0044] As shown in FIG. 11, the impeller assembly 100 of the
present disclosure can be disposed in a horizontal load conveyor
shot blasting machine 9d, which is suitable for processing complex
workpieces having multiple surfaces, e.g., I-beams. A plurality of
impeller assemblies 100 can be disposed at different angles to
simultaneously process the multiple surfaces of the complex
workpieces. In this embodiment, in order to process eight surfaces
of an I-beam, eight of the plurality of impeller assemblies 100 are
disposed. Similar to the abovementioned machines, the shot blasting
machine 9d has a shot processing assembly 93d, a plurality of
impeller assembly 100, a horizontal load conveyor T, a collecting
assembly 91d, and a lifting assembly 92d. The shot processing
assembly 93d provides the shots to the plurality of impeller
assemblies 100 through an output part 94d. The collecting assembly
91d is positioned below a central position of the eight of the
impeller assemblies 100.
[0045] One of the advantages of the present disclosure is that,
through utilizing the centrifugal force generated when the
plurality of impeller blades 12 are rotating at a high speed, the
plurality of impeller blades 12 are more tightly engaged with the
plurality of impeller blade grooves 111 of each of the pair of
rotary plates 11. This configuration can be easily manufactured and
assembled, which is beneficial in increasing the speed of the shots
for surface finishing. Therefore, the present disclosure can not
only provide a cleaning effect and enhance the surface roughness,
but also increase the fatigue resistance and the surface hardness
of the workpiece, thereby extending the service life of the
workpiece.
[0046] The foregoing description of the exemplary embodiments of
the disclosure has been presented only for the purposes of
illustration and description and is not intended to be exhaustive
or to limit the disclosure to the precise forms disclosed. Many
modifications and variations are possible in light of the above
teaching.
[0047] The embodiments were chosen and described in order to
explain the principles of the disclosure and their practical
application so as to enable others skilled in the art to utilize
the disclosure and various embodiments and with various
modifications as are suited to the particular use contemplated.
Alternative embodiments will become apparent to those skilled in
the art to which the present disclosure pertains without departing
from its spirit and scope.
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